you say that Wil but any decent tuner will ask you 10K for a 500HP engine so for under £6000 for a 700hp bottom end its very tempting dont you think?
Its like you said anyone can go and buy a V8 for 4K ready to rock but wheres the fun in that
and as far as reliablity, its not like your running round on full boost all the time, if the Gatebill mob are doing it